There will be three erudite mages who assist your party with this fight. Each one prevents a different ability of Ghis'. Throughout the fight, Ghis will kill 2 of them at a time. Any Priest class can revive them by right clicking and selecting 'revive'.

Ghis will teleport himself to the ledge in front of the room and summon two walls of ice. Players have a short time to get behind these walls before Zoz unleashes an AOE which hits any player not safely behind the walls for over 100K. When players have properly located themselves behind the walls, the game will flash red text on their screens saying so.

Ghis will also put a stun/stifle elemental debuff on the tank, this must be dealt with by harvesting/using a crystal that spawns on a side wall.

At 10% Ghis will summon gazer adds, these can be dealt with by an off tank or simply ignored and burn the named down. These adds are different from the "normal" ones the erudite mages kill during the fight.